Apex domains cannot have CNAME records.
Question and response
Question
dig vpsecomputer.com. NS
Answer
vpsecomputer.com. 5 NS ns1.vpsecomputer.com.
vpsecomputer.com. 5 NS ns2.vpsecomputer.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0